Roll src/third_party/dawn 6eb7d0ec3ecf..672707f76e2d (4 commits)

https://dawn.googlesource.com/dawn.git/+log/6eb7d0ec3ecf..672707f76e2d

git log 6eb7d0ec3ecf..672707f76e2d --date=short --no-merges --format='%ad %ae %s'
2019-10-30 enga@chromium.org perf_tests: Compute metrics for command validation and recording
2019-10-30 enga@chromium.org Only mark objects as cached right before inserting into the cache
2019-10-30 senorblanco@chromium.org Add another missing #include.
2019-10-29 bryan.bernhart@intel.com Limit heap growth when uploading with SetSubData.

Created with:
  gclient setdep -r src/third_party/dawn@672707f76e2d

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dawn-chromium-autoroll
Please CC cwallez@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

CQ_INCLUDE_TRYBOTS=luci.chromium.try:dawn-linux-x64-deps-rel;luci.chromium.try:dawn-mac-x64-deps-rel;luci.chromium.try:dawn-win10-x64-deps-rel;luci.chromium.try:dawn-win10-x86-deps-rel
TBR=cwallez@google.com

Bug: None
Change-Id: I9fcb30c9e34d00789056f0b353dd6de8b6496cf2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1889252Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#710644}

DEPS

@@ -307,7 +307,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
-  'dawn_revision': '6eb7d0ec3ecf2e882ff3aae8d1e9c7474d6207ad',
+  'dawn_revision': '672707f76e2dfb7c12c1870adbe2e889ae217fe9',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.